title: Uterine doughnut in early proliferating phase: potential pitfall in gastrointestinal bleeding studies.
mesh_terms: D003937:Diagnosis, Differential; D003951:Diagnostic Errors / Q000517:prevention & control*; D004912:Erythrocytes / Q000000981:diagnostic imaging; D005260:Female; D005498:Follicular Phase / Q000378:metabolism*; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis / Q000000981:diagnostic imaging* / Q000378:metabolism; D006801:Humans; D011877:Radionuclide Imaging; D019275:Radiopharmaceuticals / Q000493:pharmacokinetics; D017556:Technetium Compounds / Q000493:pharmacokinetics*; D013671:Technetium Tc 99m Sulfur Colloid / Q000493:pharmacokinetics; D014599:Uterus / Q000098:blood supply / Q000000981:diagnostic imaging* / Q000378:metabolism*
chemical_list: D019275:Radiopharmaceuticals; D017556:Technetium Compounds; D013671:Technetium Tc 99m Sulfur Colloid